Which timeline shows the correct order of contributions made to the discovery of DNAA scientist has a tomato plant with red-skinned tomatoes. It has one allele for red skin (R) and one for yellow skin (r).
Which describes the phenotype of the tomato plant?
red skin
yellow skin
homozygous
heterozygous
Answers
The correct order of contributions to the discovery of DNA is Friedrich Miescher, Phoebus Levene, Frederick Griffith, Avery, MacLeod, and McCarty, Erwin Chargaff, Rosalind Franklin and Maurice Wilkins, and James Watson and Francis Crick.
Regarding the tomato plant phenotype, if the plant has one allele for red skin (R) and one allele for yellow skin (r), the correct description for its phenotype would be heterozygous.
The correct answer would be heterozygous.
The correct order of contributions to the discovery of DNA can be represented by the following timeline:
1. Friedrich Miescher (1869): Miescher discovered a substance in the nucleus of cells, which he called "nuclein." This substance was later identified as DNA.
2. Phoebus Levene (1919-1929): Levene made significant contributions to understanding the chemical composition of DNA. He identified the components of DNA, including nucleotides and the sugar-phosphate backbone.
3. Frederick Griffith (1928): Griffith conducted an experiment with Streptococcus pneumoniae bacteria, demonstrating the concept of transformation. He observed that harmless bacteria could acquire the ability to cause disease by incorporating genetic material from other bacteria.
4. Avery, MacLeod, and McCarty (1944): Building on Griffith's work, this group of scientists identified DNA as the substance responsible for the transformation observed in bacteria. Their experiments provided strong evidence that DNA carries genetic information.
5. Erwin Chargaff (1949): Chargaff discovered that the amount of adenine (A) in DNA is equal to the amount of thymine (T), and the amount of cytosine (C) is equal to the amount of guanine (G). This finding became known as Chargaff's rules.
6. Rosalind Franklin and Maurice Wilkins (1952): Franklin and Wilkins used X-ray crystallography to obtain images of DNA's structure, including the famous "Photo 51" taken by Franklin. These images provided critical insights into DNA's helical structure.
7. James Watson and Francis Crick (1953): Watson and Crick, building on the work of others, proposed the double helix structure of DNA. They combined data from various sources to create a model that explained how DNA stores and transmits genetic information.
Regarding the tomato plant phenotype, if the plant has one allele for red skin (R) and one allele for yellow skin (r), the correct description for its phenotype would be heterozygous. The phenotype refers to the observable physical traits of an organism, and in this case, the presence of both red and yellow skin alleles results in a mixed phenotype with red skin being dominant over yellow skin. Therefore, the plant will exhibit red skin as its phenotype.
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Related Questions
define organic agriculture production for at least three to five sentences
Answers
Answer
Organic farming can be defined as an agricultural process that uses biological fertilisers and pest control acquired from animal or plant waste. Organic farming was initiated as an answer to the environmental sufferings caused by the use of chemical pesticides and synthetic fertilisers.
1. Over time, the climate of an island became drier, which resulted in changes to the populations of various island finch species. Finch populations with a certain beak shape thrived, while those not having that beak shape decreased, Which of the following describes a necessary condition for thesechanges in the finch populations to occur?
Answers
Answer:
A necessary condition for the changes in the finch populations to occur in response to the drier climate would be:
- Variation in beak shape within the initial population: There must have been existing genetic variation in the population of finches regarding beak shape. Some finches would have had the beak shape that provided an advantage in obtaining food resources in the drier climate, while others would have had different beak shapes.
Without this initial variation in beak shape, there would be no opportunity for natural selection to act and favor individuals with the advantageous beak shape. Therefore, the presence of genetic variation within the population is necessary for the changes in the finch populations to occur.
Based on the theory of natural selection, the necessary condition for the changes in the finch populations to occur is limited food resources. Option B
What does natural selection say?Natural selection is the process by which populations of living organisms adapt and change over time.
Natural selection occurs when there is variation within a population of a species, and some individuals are better able to survive and reproduce than others.
These individuals are more likely to pass on their genes to the next generation, and the population will gradually change over time.
The above answer is based on the full question below;
Over time, the climate of an island became drier, which resulted in changes to the populations of various island finch species. Finch populations with a certain beak shape thrived, while those not having that beak shape decreased, Which of the following describes a necessary condition for these changes in the finch populations to occur?
A. fewer mutations B. limited food resources C. limited beak variations D. overproduction of offspring
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in what order does the tRNA move through the binding sites of a ribosome
Answers
Answer:
A-->P--->E
Explanation:
M is the midpoint of AD. Triangles A B M and D C M are connected at point M. Sides A B and C D are congruent. The lengths of sides B M and M C are 27. What single transformation is required to map one of these congruent triangles onto the other? Reflection Rotation Translation Dilation
Answers
Answer:
Reflection
Explanation:
E2020 certified answer
Answer:
option 1 : reflection
Explanation:
edg 2022
My parents are tall but I’m short am I adopted???
Answers
Answer:
Nope. You get your height genes from both sides of your family - and you can end up taller or shorter than either or both of your parents. You never know if some of your ancestors might have contributed genes.
Hope this Helps!
-Lexie
tion 5 of 50
An investigation is an example of
Answers
An investigation is an example of research.
What is research?Research is the process of gathering and analyzing information in order to answer a question or solve a problem. Investigations are a type of research that is typically conducted to gather evidence about a crime or other incident. Investigators may gather evidence through interviews, document reviews, and physical examinations. They may also use scientific techniques, such as DNA testing or fingerprint analysis.
The goal of an investigation is to gather enough evidence to determine what happened and who is responsible. This information can then be used to bring charges against the perpetrator or to take other necessary steps.
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What is the scientific name for a Burchell’s zebra?
Answers
Answer:
Equus quagga
Explanation:
I hope this helps!!
Have a great day!
-jmora273
P.S Remember the Name!!!
This leads to other question. You have observed that older pennies
before 1982) seem to be a different resght from more recent permes after
1982. You wonder why. Is the difference in weight of the pecunies because
they are not the same size, or because they are not made of the same
metals? Now, it's your job to test the next hypothesis.
e
1 Determine how you would estimate the size of the coins by measuring
the volume of water displaced by the coins.
2 Use the graduated cylinder on the lab table and 10 coins together to
get a better estimate of water displacement and the individual con
size. Do this for both pre- and post-1982 pennies.
3 A simple answer to the question of differences in metal is revealed
when peanies are cat in half. Ask your instructor to show you those
pennes
4 Complete the lab report for this exercise on the next page.
Answers
Answer:
sorry i don't know this question answered
aggregate demand is everything produced while simple demand is one good. what statement reflects that aggregate demand? A. calculating average price level B. calculating price C. calculating quantity demanded
Answers
Answer:
I think the correct answer is B. calculating price
. Mushroom is under............
i. Genus
ii. Donail
iii. Taxonomy
iv. Species
Answers
Answer:
Mushrooms are classified under the categories of "Genus" and "Species" in taxonomy. The genus refers to a group or category that includes closely related species, while the species represents a specific type or kind of organism. So, the correct options for mushrooms would be "i. Genus" and "iv. Species."
Hello please help will give brainliest! (Other-Feeder)
Answers
Answer:
i think it is c and a
Explanation:
Carlton and Vanessa are lab partners in their biology class. One of their labs was to run the smell test experiment on each other.
When performing the smell test, Vanessa was quite good at noticing a difference between the various intensities of vanilla and also
the various intensities of evergreen. Although Carlton could distinguish what the vanilla and evergreen smells were, he couldn't tell
there was a difference in the intensities in the vanilla or the evergreen. Based on the information presented in this scenario, which
of the following is true?
Vanessa has a more sensitive difference threshold than Carlton.
Carlton has an impaired absolute threshold.
Vanessa has a better absolute threshold than Carlton.
Carlton has the superior performance with respect to the difference threshold.
Vanessa has an impaired absolute threshold.
Answers
Vanessa has a better absolute threshold and more sensitive difference threshold than Carlton, and Carlton has an impaired absolute threshold.
Carlton and Vanessa were lab partners for a biology class and were asked to run a smell test experiment on each other.
Vanessa was excellent at noticing the difference between various intensities of vanilla and evergreen.
Carlton, on the other hand, couldn't distinguish the difference in the intensities of both vanilla and evergreen, though he could tell the smells of both.
Hence, based on the information provided in the scenario, it can be inferred that Vanessa has a more sensitive difference threshold than Carlton, and Carlton has an impaired absolute threshold.
The two significant aspects that are involved in the scenario are absolute threshold and difference threshold.
The absolute threshold is the smallest quantity of a stimulus that an individual can detect, whereas the difference threshold is the minimum difference in stimuli that an individual can detect.
Carlton could recognize the stimuli's smell but not the difference in the intensity of vanilla and evergreen.
This shows that Carlton has an impaired absolute threshold.
He could not detect the smallest quantity of a stimulus to differentiate between the smells.
Vanessa was quite good at noticing the difference in the intensities of vanilla and evergreen.
This means that Vanessa has a more sensitive difference threshold than Carlton. She could detect the minimum difference in stimuli required to differentiate between smells.
Vanessa also has a better absolute threshold than Carlton as she could detect the smallest quantity of stimulus required to detect the smells.
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How does the reactivity of the elements change as you go down the periodic table
Answers
Answer:
The farther to the left and down the periodic chart you go, the easier it is for electrons to be given or taken away, resulting in higher reactivity
Answer:
The metallic character increases as you go down a group. Since the ionization energy decreases going down a group, the increased ability for metals lower in a group to lose electrons makes them more reactive.
Which list is an organ system?(1 point)
a. the heart, arteries, and veins
b. the heart, the stomach, and intestines
c. the liver, the bladder, and the heart
d. the liver, blood, and skin
I selected D. do you think its correct?
Answers
Answer:
B
Explanation:
the heart, the stomach and intestines
What type of boundary is this?
Answers
The image represents the continental-continental boundary. When two continental plates collide, that's another kind of convergent plate boundary. The continental lithosphere is very thick and has a low density. The continental lithosphere cannot subduct. So when two mainland plates impact, they simply crush together.
Plate tectonic boundaries come in three varieties: plate boundaries that are transformed, divergent, and convergent. The three primary types of plate boundaries are depicted in this image: transform, convergent and divergent.
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Are humans the only organisms with vestigial traits?. Explain your answer
Answers
Answer:
no
Explanation:
pelvic girdle in whale and snake are also vestigial traits.
All cells live and divide at the same rate.
True
False
Answers
Answer: False
Explanation:
Which of the following subjects was NOT studied by boys in Ancient Athens? A. Math B. Athletics C. Science D. Reading
Answers
Answer:
C. Science
explanation:
Because they did not know want Science was
Arid desert biomes can have extreme differences of temperature between night and day. Coastal Florida's temperatures are moderated. How is the temperature of Florida's coast moderated?
Answers
Large bodies of water like the Atlantic Ocean and the Gulf of Mexico, as well as the dominant winds, help to keep Florida's coast from getting too hot.
The water bodies can absorb and hold a lot of heat without rapidly altering temperature because of their high heat capacity. As a result, throughout the day, the coastal waters serve as a heat sink, soaking up heat from the nearby land and air.
In general, vast bodies of water, prevailing winds, and ocean currents work together to regulate the temperature along Florida's coast, resulting in a more consistent and mild climate than parched desert biomes.
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A crane has a sharp and pointed beak while the duck has a flat beak.Explain why
Answers
Answer:
The crane has a sharp and pointed beak adapted for catching and grasping prey. The sharp beak allows the crane to effectively stab and pierce its prey, such as fish, frogs, or small animals. The pointed shape helps the crane to accurately target its prey and secure a firm grip.
On the other hand, the duck has a flat beak, which is better suited for its specific feeding habits. Ducks are primarily filter feeders, and their flat beak enables them to sift through water or mud to collect small organisms, insects, and plants. The flat beak acts like a sieve, allowing the duck to strain out food particles while retaining water.
The difference in beak shape between the crane and the duck reflects their distinct feeding strategies and ecological roles. Each species has evolved its beak shape to optimize its ability to capture and consume the specific types of food sources available in their respective habitats.
state the reasons for the solubility of glucose in water
Answers
2. Glucose has a relatively low molecular weight and does not have a significant hydrophobic region. This means that glucose does not disrupt the water structure significantly and can dissolve easily in water.
3. Water is a polar solvent, and glucose is also polar. Polar substances are generally soluble in polar solvents like water.
4. Glucose is a small carbohydrate, and its molecules are able to mix effortlessly with water without interfering with the water structure, resulting in its high solubility in water.
i-261-465-6691
p-0000
Answers
Answer:
UH HELLO AND I APPRECIATE THIS SO THANK YOU AND HAVE A NICE DAY FOR THE POINTS EVEN DO IT IS NOT MUCH
Explanation:
1. Which of the following is NOT a major tectonic plate?
Eurasian
Nazca
South American
Canadian
Australian
Answers
The option that is not a major tectonic plate is known as Australian. Thus, the correct option for this question is E.
What is a Tectonic plate?The tectonic plate may be characterized as a type of gigantic piece of the Earth's crust and uppermost mantle. They are generally constructed up of the oceanic crust and continental crust.
Earthquakes take place around mid-ocean ridges and the large faults which definitely mark the edges of the plates. Due to this, the surface of the earth is cracked into moderate to larger pieces called plate tectonics. The lithosphere of the earth is correspondingly divided into seven major and some minor plates.
Therefore, the option that is not a major tectonic plate is known as Australian. Thus, the correct option for this question is E.
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This chart gives data on greenhouse gas emissions in the United States from 1990 to 2013. Which questions would help clarify the evidence in the chart? Graph of U.S. Greenhouse Gas Emissions by Gas, 1990-2013. Horizontal line, 1990-2013. Bottom to above, gases shaded are Fluorinated, Other greenhouse, Methane, Carbon Dioxide in million metric tons of carbon dioxide equivalents ranging from 0-8,000.
Answers
The questions that would help clarify the evidence in the chart are:
A. What percentage of total greenhouse gas emissions is caused by natural sources?
C. Why are carbon dioxide emissions so much higher than other greenhouse gases?
What are greenhouse gases?A greenhouse gas is a particular kind of gas that both absorbs and emits radiant radiation, which causes the atmosphere to warm.
Methane, nitrous oxide, carbon dioxide, and other manmade compounds are among the main greenhouse gases.
Carbon dioxide is cited as the most significant greenhouse gas since it now contributes the most to the warming caused by human activity,
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Complete question:
This chart gives data on greenhouse gas emissions in the United States from 1990 to 2013. Which questions would help clarify the evidence in the chart? Select ALL the correct answers.
1. What percentage of total greenhouse gas emissions is caused by natural source?
2. Should industries emitting carbon dioxide in huge amounts be fined or punished?
3. Why are carbon dioxide emissions so much higher than other greenhouse gases?
4. Why did the quantity of carbon dioxide emissions stay constant throughout the period?
5. What is the chemical formula for methane?
b. Describe the journey of a snowflake from when it falls to Earth until the water it contains
becomes groundwater. Include both the movements of the water and the processes involved.
There are many possibilities; limit your answer to one path. (2 points)
Answers
Answer:
When a snowflake falls to Earth, it can land on the ground or on other surfaces, like trees or buildings. If it lands on the ground, it could either melt right away if the temperature is above freezing, join other snowflakes to form a snowpack, or percolate through the snowpack to form groundwater.
If the snowflake becomes part of a snowpack, it will experience periodic melting and refreezing as temperatures fluctuate. Over time, some of the snow will undergo metamorphism and become denser, forming a layer of firn. The weight of the snowpack compacts the layers below and forms glacial ice, which can move down slope due to gravity. This process is called a glacier's ablation zone, where the glacier loses mass.
Eventually, the ice and snow may seep into the ground and become groundwater. Groundwater travels through porous rocks and sediment and can sometimes be drawn up by wells. This journey from snowflake to groundwater involves multiple physical and chemical processes like melting, precipitation, infiltration, evaporation, condensation, metamorphism, and several geological phenomena.
Scarification is a process that scratches up the surfaces of seeds that pass through the guts of birds. A student wanted to see if scarified seeds grew better than those that were not scarified. He simulated scarification by rubbing 20 cherry seeds with sandpaper. Another set of 20 cherry seeds were left alone. The student planted each of the seeds into separate pots and gave them the same amount of water daily. The pots were placed in a location with a constant temperature of approximately 25 degrees C. The number of seeds that germinated each group was recorded daily for three weeks. Which is the control group?
Which is the experimental group?
What is the independent variable?
What is the dependent variable?
Name at least one controlled variable?
Was quantitative or qualitative data collected?
Answers
The control group is the set of non-scarified seeds. The experimental group is the set of scarified seeds. The independent variable is scarification process. The dependent variable. is the number of seeds that germinated in each group.
Controlled variables are the amount of water supplied daily, the constant temperature of the growing environment, the type of cherry seeds used and the size of the planting pots.
Quantitative data are the daily count of the number of seeds that germinated in each group over three weeks.
The study does not have qualitative data.
Differences between dependent and independent variablesThe independent variable needs no stimulus to generate results.The dependent variable needs to be stimulated by the independent variable to generate results.A scientific experiment needs to feature all of the elements represented above to be effective and reliable. This is because these elements prove that the experiment was carried out methodically, specifically, and with care in each variable and presented data.
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is the plant which eat (carnivorous plant), if there is what is there name and can you send a picture of it
Answers
Answer: venus flytrap and etc
Explanation:
venus flytrap is a type of plant where they eat small insects for its nutrients
Which of the following is TRUE of a homologous trait?
C. It helps determine the branching sequence of organisms on an evolutionary tree.
B. It is a difference between organisms of the same species.
A. It is a trait that evolved out of an organism through time.
Answers
Homologous trait being the trait that evolved out of an organism through
time is True.
What is a Homologous trait?These are the traits which are shared by species because they have
common ancestors. These traits evolve with time as a result of organisms
adaptation to different conditions.
They aren't referred to as the difference between the organisms of the
same species which makes option A the most appropriate choice.
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Answer: C, It helps determine the branching sequence of organisms on an evolutionary tree
Explanation:
I’m taking the same class with the same questions. That’s the answer.
3 main stages of cellular respiration ?
Answers
Answer:
The reactions of cellular respiration can be grouped into three stages: glycolysis, the Krebs cycle (also called the citric acid cycle), and electron transport.
Explanation:
;)
Take any two words and connect them to form a sentence about photosynthesis.
____________ and ___________ go together because_______________________.
Terms:
Calvin Cycle
Carbon Dioxide
Chlorophyll
Chloroplast
Glucose
Leaf
Light
Light Dependent Reaction
Light Independent Reaction
Oxygen
Photosynthesis
Pores
Product
Reactant
Root
Starch
Sun
Water
Answers
Answer:
Solution:
plant's takes carbon dioxide ,water ,sunlight,and minerals and produce glucose and excrete out oxygen:
PRODUCT and REACTANT go together because any reactants in a chemical equation will result in a product of the reactants.